FIELD: agriculture, in particular, plant growing, more particular, forecasting of accumulation of biological nitrogen in soil by various leguminous crops.
SUBSTANCE: method involves photocolorimetric determining of leghemoglobin pigment content in leguminous plant tubers; defining three extents of nitrogen fixing activity: high, average, and low.
EFFECT: increased efficiency in evaluating nitrogen fixing activity of leguminous crops, annual and perennial grasses.
1 tbl
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| METHOD OF DETERMINING SOIL TOXICITY | 2012 |
|
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